I'm so jealous most of them time when I look at his icons, seriously. I mean, the colors! OMG THE COLORS! They are always so damn vibrant. The contrast in the icons is always perfect, and I love the way he plays with lights and textures. Another thing is the text. I for one was never really good with text, that's why I only barely use it on my own icons, but he always gets it right.
He's definitely one of my all-time favorite iconmakers ♥